Download or read book Variation and Evolution in Arctic and Alpine Plants written by International Organization of Plant Biosystematists. International Symposium and published by . This book was released on 1997 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arctic and Alpine Biodiversity Patterns Causes and Ecosystem Consequences written by F.Stuart III Chapin and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: As human populations expand and have increasing access to technol ogy, two general environmental concerns have arisen. First, human pop ulations are having increasing impact on the earth system, such that we are altering the biospheric carbon pools, basic processes of elemental cycling and the climate system of the earth. Because of time lags and feedbacks, these processes are not easily reversed. These alterations are occurring now more rapidly than at any time in the last several million years. Secondly, human activities are causing changes in the earth's biota that lead to species extinctions at a rate and magnitude rivaling those of past geologic extinction events. Although environmental change is potentially reversible at some time scales, the loss of species is irrevo cable. Changes in diversity at other scales are also cause for concern. Habitat fragmentation and declines in population sizes alter genetic di versity. Loss or introduction of new functional groups, such as nitro gen fixers or rodents onto islands can strongly alter ecosystem processes. Changes in landscape diversity through habitat modification and frag mentation alter the nature of processes within and among vegetation patches. Although both ecological changes altering the earth system and the loss of biotic diversity have been major sources of concern in recent years, these concerns have been largely independent, with little concern for the environmental causes the ecosystem consequences of changes in biodiversity. These two processes are clearly interrelated. Changes in ecological systems cause changes in diversity.
Download or read book Arctic and Alpine Biomes written by Joyce A. Quinn and published by Bloomsbury Publishing USA. This book was released on 2008-09-30 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume in the Greenwood Guides to Biomes of the World: series covers the biomes at high altitudes and near the poles, including the arctic tundra biomes, the Mid-Latitude Alpine Tundra Biome (found in the mountain ranges of North America, Asia, and South America), and the tropical alpine tundra biome (for example, Hawaii).
Download or read book Plant Variation and Evolution written by David Briggs and published by Cambridge University Press. This book was released on 2016-06-30 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-awaited fourth edition of a classic text, now fully revised and updated for the molecular era.
Download or read book Restoration Ecology and Sustainable Development written by Krystyna M. Urbanska and published by Cambridge University Press. This book was released on 1997 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Details the scientific basis for the reconstruction of damaged ecosystems.
Download or read book Alpine Plant Life written by Christian Körner and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Generations of plant scientists have been fascinated by alpine plant lifean ecosystem that experiences dramatic climatic gradients over a very short distance. This comprehensive book examines a wide range of topics including alpine climate and soils, plant distribution and the treeline phenomenon, plant stress and development, global change at high elevation, and the human impact on alpine vegetation. Geographically, the book covers all parts of the world including the tropics.
Download or read book Plants and Climate Change written by Jelte Rozema and published by Springer Science & Business Media. This book was released on 2007-01-19 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on how climate affects or affected the biosphere and vice versa both in the present and in the past. The chapters describe how ecosystems from the Antarctic and Arctic, and from other latitudes, respond to global climate change. The papers highlight plant responses to atmospheric CO2 increase, to global warming and to increased ultraviolet-B radiation as a result of stratospheric ozone depletion.
Download or read book Variation and Evolution of the Nearctic Harebells Campanula Subsect Heterophylla written by Stanwyn G. Shetler and published by Lubrecht & Cramer, Limited. This book was released on 1982 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ladies in the Laboratory II written by Mary R. S. Creese and published by Scarecrow Press. This book was released on 2004 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey of nineteenth-century women whose journal publications are listed in the 19 volume London Royal Society's Catalogue of scientific papers, 1800-1900, comprising an author index to scientific papers contained in the transactions of societies, journals, and other periodical works, being the major index of scientific journal literature for the period.
Download or read book Adaptive Genetic Variation in the Wild written by Timothy A. Mousseau and published by Oxford University Press. This book was released on 2000-01-13 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two of the great mysteries of biology yet to be explored concern the distribution and abundance of genetic variation in natural populations and the genetic architecture of complex traits. These are tied together by their relationship to natural selection and evolutionary history, and some of the keys to disclosing these secrets lie in the study of wild organisms in their natural environments. This book, featuring a superb selection of papers from leading authors, summarizes the state of current understanding about the extent of genetic variation within wild populations and the ways to monitor such variation. It proposes the idea that a fundamental objective of evolutionary ecology is necessary to predict organism, population, community, and ecosystem response to environmental change. In fact, the overall theme of the papers centers around the expression of genetic variation and how it is shaped by the action of natural selection in the natural environment. Patterns of adaptation in the past and the genetic basis of traits likely to be under selection in a dynamically changing environment is discussed along with a wide variety of techniques to test for genetic variation and its consequences, ranging from classical demography to the use of molecular markers. This book is perfect for professionals and graduate students in genetics, biology, ecology, conservation biology, and evolution.
Download or read book Polar Research written by and published by . This book was released on 1996 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Evolution of Flowers written by Lawrence D. Harder and published by OUP Oxford. This book was released on 2006-11-30 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reproductive organs and mating biology of angiosperms exhibit greater variety than those of any other group of organisms. Flowers and inflorescences are also the most diverse structures produced by angiosperms, and floral traits provide some of the most compelling examples of evolution by natural selection. Given that flowering plants include roughly 250,000 species, their reproductive diversity will not be explained easily by continued accumulation of case studies of individual species. Instead a more strategic approach is now required, which seeks to identify general principles concerning the role of ecological function in the evolution of reproductive diversity. The Ecology and Evolution of Flowers uses this approach to expose new insights into the functional basis of floral diversity, and presents the very latest theoretical and empirical research on floral evolution. Floral biology is a dynamic and growing area and this book, written by the leading internationally recognized researchers in this field, reviews current progress in understanding the evolution and function of flowers. Chapters contain both new research findings and synthesis. Major sections in turn examine functional aspects of floral traits and sexual systems, the ecological influences on reproductive adaptation, and the role of floral biology in angiosperm diversification. Overall, this integrated treatment illustrates the role of floral function and evolution in the generation of angiosperm biodiversity. This advanced textbook is suitable for graduate level students taking courses in plant ecology, evolution, systematics, biodiversity and conservation. It will also be of interest and use to a broader audience of plant scientists seeking an authoritative overview of recent advances in floral biology.
Download or read book Structure and Function of an Alpine Ecosystem written by William D. Bowman and published by Oxford University Press. This book was released on 2001-04-26 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will provide a complete overview of an alpine ecosystem, based on the long-term research conducted at the Niwot Ridge LTER. There is, at present, no general book on alpine ecology. The alpine ecosystem features conditions near the limits of biological existence, and is a useful laboratory for asking more general ecological questions, because it offers large environmental change over relatively short distances. Factors such as macroclimate, microclimate, soil conditions, biota, and various biological factors change on differing scales, allowing insight into the relative contributions of the different factors on ecological outcomes.
Download or read book Flora of Alaska and Neighboring Territories written by Eric Hultén and published by Stanford University Press. This book was released on 1968 with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monumental work by the world's preeminent authority on Arctic floras--the first comprehensive, up-to-date botanic manual for this region--is the product of the author's more than forty years of study of circumpolar floras. The book describes and illustrates all flowering plants and vascular cryptograms known to occur in Alaska, the Yukon, the Mackenzie District, and the eastern extremity of Siberia. Some 1,974 taxa, belonging to 1,559 species, occur in this region; all are described. For 1,735 of these, the book provides detailed description, nomenclature, plant drawing, and range maps. In each case, one map gives distribution in the Alaskan region; a second, on circumpolar projection, gives worldwide range. This volume is the first major flora to assemble such comprehensive range data and to provide such maps. An analytic key to all species described is provided for each genus, and there is an artificial key to families. An Introduction describes the past and present climatic, geologic, and ecologic character of the regions covered, the history of botanical collection in these regions, and the book's treatment of botanical and taxonomic details; and lists the plants of neighboring regions likely to occur. Glossary, plant authors' list, bibliography, and indexes are provided. The superb drawings were prepared by Dagny Tande-Lid, and eight pages of illustration in color are included.
Download or read book Cold Adapted Organisms written by Rosa Margesin and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Representing the latest knowledge of the ecology and the physiology of cold-adapted microorganisms, plants and animals, this book explains the mechanisms of cold-adaptation on the enzymatic and molecular level, including results from the first crystal structures of enzymes of cold-adapted organisms.
Download or read book Evolutionary Ecology written by Charles W. Fox and published by Oxford University Press. This book was released on 2001-10-19 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolutionary Ecology simultaneously unifies conceptual and empirical advances in evolutionary ecology and provides a volume that can be used as either a primary textbook or a supplemental reading in an advanced undergraduate or graduate course. The focus of the book is on current concepts in evolutionary ecology, and the empirical study of these concepts. The editors have assembled a group of prominent biologists who have made significant contributions to this field. They both synthesize the current state of knowledge and identity areas for future investigation. Evolutionary Ecology will be of general interest to researchers and students in both ecology and evolutionary biology. Researchers in evolutionary ecology that want an overview of the current state of the field, and graduate students that want an introduction the field, will find this book very valuable. This volume can also be used as a primary textbook or supplemental reading in both upper division and graduate courses/seminars in Evolutionary Ecology.
Download or read book Evolution and Ecology written by K. D. Bennett and published by Cambridge University Press. This book was released on 1997 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolutionary synthesis using contribution of recent fossil record to understand mechanisms of macroevolutionary change.
